body{
    margin: 0;
    padding: 0;
}

section{
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    background-color: #111;
    overflow: hidden;
}

section .text{
    position: relative;
    color: #fff;
    margin: 20px;
    max-width: 800px;
    user-select: none;
}

section .text span{
    position: relative;
    display: inline-block;
    cursor: pointer;
}

section .text span.active{
    animation: smoke 2s linear forwards;
    transform-origin: bottom;
}

.show{
    animation: show-letter .5s linear forwards;
}

@keyframes show-letter{
    0%{
        opacity: 0;
        transform: rotate(0deg) scale(1);/*可注释*/
    }
    50%{
        opacity: 0.5;
        transform: rotate(45deg) scale(1.1);
    }

    100%{
        opacity: 1;
        transform: rotate(0deg) scale(1);/*可注释*/
    }
}

@keyframes smoke{
    0%{
        opacity: 1;
        filter: blur(0);
        transform: translateX(0) translateY(0) rotate(0deg) scale(1);
    }
    100%{
        opacity: 0;
        filter: blur(20px);
        transform: translateX(300px) translateY(-300px) rotate(720deg) scale(4);
    }
}
